Not burn in Two Step Simulation of A Combustion Chamber

Modest Cat · November 2, 2011, 20:37

hi guys!
m using fluent to simulate combustion in a burner. The fuel is CH4.
As the User's Guide says, simulation can be devided into two steps: cold flow and combustion.
But I cannot get it burn in the second step.Please help!

Main Set:
1.Cold Step
Species: Species Transport, Inlet Difussion, Difussion Energy Source.
(Reaction off)
Solution Control: Equations-> CO2 and H2O off.
2.Combustion:
Species: Reaction on-> ED model.
Solution: Equations-> CO2 and H2O on

Modest Cat · December 3, 2011, 23:26

I found out the reason.
I set a constant T=300K as the BC for wall, which was too low.
After changing the BC of wall to adiabatic, the mixture start to burn.

akis · December 5, 2011, 05:06

Hi Guys.......
I am a B.Tech student(5th sem, MANIT BHOPAL) and I am just a beginner in the world of CFD. I am quite interested in Combustion modelling of IC Engine.So could you please provide the links of tutorials related to above mentioned field.

November 2, 2011, 20:37	Not burn in Two Step Simulation of A Combustion Chamber	#1
Modest Cat New Member Samuel Join Date: Nov 2011 Posts: 12 Rep Power: 15	hi guys! m using fluent to simulate combustion in a burner. The fuel is CH4. As the User's Guide says, simulation can be devided into two steps: cold flow and combustion. But I cannot get it burn in the second step.Please help! Main Set: 1.Cold Step Species: Species Transport, Inlet Difussion, Difussion Energy Source. (Reaction off) Solution Control: Equations-> CO2 and H2O off. 2.Combustion: Species: Reaction on-> ED model. Solution: Equations-> CO2 and H2O on

December 5, 2011, 05:06	combustion modelling	#3
akis New Member Akash Agarwal Join Date: Dec 2011 Posts: 2 Rep Power: 0	Hi Guys....... I am a B.Tech student(5th sem, MANIT BHOPAL) and I am just a beginner in the world of CFD. I am quite interested in Combustion modelling of IC Engine.So could you please provide the links of tutorials related to above mentioned field.

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December 3, 2011, 23:26		#2
Modest Cat New Member Samuel Join Date: Nov 2011 Posts: 12 Rep Power: 15	I found out the reason. I set a constant T=300K as the BC for wall, which was too low. After changing the BC of wall to adiabatic, the mixture start to burn.